Reading the thread about the no extra for a gun dog many mention Evans program or Lardy program, but aren't these all Rex Carr developed systems? I have a collection of studennts notes that trained with Rex and Every Drill is there there isn't a system that uses a collar thats new.
I have a photo of Joe Schomer, Jolors Amigo, and Edith Murnane where Joe is showing Mrs. Murnane hoe he pinches ears.
There is really nothing new but some techniqes might be refined as equipment improves. Youno longer have to condition a dog for the maximum level of stimulation, but now we have the option of using the lowest level of stimulation that gets results.